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Post-doctoral Students

Laetitia Challe earned her PhD in Economics in December 2016 and has been working as a research engineer since September 2017 at ERUDITE/TEPP-CNRS.
Her main research topics are age discrimination in employment, senior employment and its implications for public policies.

Her thesis, using both survey and experimental data, focused on the empirical analysis of the link between senior underemployment and labour market discrimination in France. It was conducted at the University of Paris-Est under the supervision of Yannick L'Horty and Pascale Petit and financed by a doctoral grant from the Ile-de-France region within the framework of the DIM Genre, Inégalités, Discriminations. This thesis follows a master's degree in Employment and Skills Expertise (Expertise de l’Emploi et des Compétences) completed as an apprenticeship in 2012 at the CNRS research federation and entitled "Theory and evaluation of public policies" ("Théorie et Evaluation des Politiques Publiques") (FR 2042).

Her current activities consist in providing scientific and logistical support on :
- the launch of new controlled experiments
- ongoing controlled experiments
- the presentation of the finalized projects (publications, conference presentations, etc.).

From February 2021 to December 2022, she will be part of the SMARTLAB LABILITY project (grouping 8 laboratories, 9 research themes and whose scientific promotion will be ensured by the Gustave Eiffel University) and will be working on the theme of the change in recruitment practices during the economic crisis.

Souleymane Mbaye, earned his PhD from ERUDITE in 2019 and is currently a post-doctoral researcher on a project entitled "Telecentres tested by the health crisis" ("Les télécentres à l’épreuve de la crise sanitaire").

His post-doctoral activity consists in having a scientific approach of the telecentres that have been tested by the health crisis.
There is a relatively large literature on telecentres, which consists mainly of case studies conducted in the late 1990s and early 2000s. The work focuses on the opening of telecentres in rural areas and in emerging countries. But this literature is not connected with the current health crisis and few works deal with the specific situation of the Ile-de-France and the recent development of telework, especially in the proximity of train stations. According to France Tiers-Lieux, 80% of third places are in serious difficulty and report a real risk of closure in the short or medium term. The aim of this project is to carry out a study, including both a qualitative and a quantitative aspect, on telecentres, focusing on 1) the effects of the health crisis on their present and future and 2) the impact of telecentres on mobility and residential attractiveness.

Rémi Le Gall, earned his PhD from ERUDITE in 2018 and is currently a post-doctoral researcher on a project entitled "Method for the regular measurement of the non-use of social benefits" ("Méthode de mesure régulière du non-recours aux prestations sociales") at the DREES.

- PhD thesis: "The economics of information verification schemes: an experimental approach" (L’économie des dispositifs de vérification de l’information : une approche expérimentale)

The economics of complete contracts predicts that within an agency relationship of a productive organisation, in the presence of a moral hazard, an information verification scheme can address both a problem of cooperation between individuals and a problem of coordination of activities. However, instead of disciplining opportunistic behaviour, this scheme may generate hidden costs and reduce the intrinsic motivation of agents to perform an activity that has been assigned to them. Under certain conditions, it generates a reduction in activity, and a loss in allocation, which undermines efficiency. In this doctoral thesis, we conducted three controlled field experiments with random assignment that aimed to modify the configurations of the information checking scheme in order to solve an organisational problem specific to three particular agency relationships. In our first chapter, we tested the effect of varying the amount of information held by contributors on the social declaration verification scheme through targeted messages containing explanations of the control power of the Agence Centrale des Organismes de Sécurité Sociale (ACOSS), the central agency for social security organisms, to reduce social fraud. In our second chapter, we tested the reduction of the intensity of electronic monitoring of the performance of advisors in an outsourced call centre in order to improve their quality of work life. Finally, in our third chapter, we tested the effect of contractual negotiation of the evaluation scheme of undergraduate students' participation during tutorials in order to improve their success at university.

Postdoctoral project: Production of a regular indicator of non-use of social benefits

As part of the national strategy to prevent and combat poverty, the DREES (Direction de la Recherche des Études de l'Évaluation et des Statistiques), the Department of Research, Studies, Evaluation and Statistics, is working to develop indicators to monitor the annual non-use of social benefits. To this end, the project is to assess a method of measuring this phenomenon based on the INSEE's tax and social income survey (ERFS -Enquête Revenus Fiscaux et Sociaux) and the Ines microsimulation model co-managed by the INSEE, DREES and the CNAF, the national family benefits fund(Caisse Nationale des Allocations Familiales). The work envisaged focuses on the active solidarity income (RSA - Revenu de Solidarité Active) and the activity allowance (PA - Prime d’Activité). The aim is to assess the data sources and the eligibility simulation programmes, and to carry out a statistical analysis of the determining factors of the non-use of these benefits. 

Cyrine Hannafi, PhD, is a post-doctoral researcher on a project entitled "Measuring the non-use of social benefits in France/Social protection" at the DREES.

Current activity: Producing a regular measurement of the non-use of social benefits in France, mainly the RSA and AP, while presenting the limitations of the measurements, including the data and their reliability, as well as the simulation of eligibility with micro-simulation. A study on the determining factors of non-use may also be envisaged once the measurement has been provided.